Consolidated Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net loss	$ (2,560)	$ (3,138)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	646	962
Amortization	0	78
Provision for bad debt expense	26	30
Share-based compensation expense	235	148
Impairment and loss/gain on disposal of fixed assets	123	(14)
Change in assets and liabilities:
Accounts receivable	(1,742)	(2,175)
Inventories	(102)	(280)
Other assets	(502)	655
Accounts payable, accrued expenses and other long-term liabilities	720	1,378
Net cash used in operating activities	(3,156)	(2,356)
Cash flows from investing activities:
Capital expenditures	(311)	(986)
Proceeds from sale of fixed assets	0	50
Net cash used in investing activities	(311)	(936)
Cash flows from financing activities:
Reduction in capital lease obligations	(48)	(72)
Debt financing fees	(967)	(101)
Net cash used in financing activities	(1,015)	(173)
Net decrease in cash and cash equivalents	(4,482)	(3,465)
Cash and cash equivalents at beginning of period	8,319	16,917
Cash and cash equivalents at end of period	3,837	13,452
Supplemental disclosure of non-cash investing activities:
Fixed assets vouchered but not paid	182	541
Fixed assets acquired by capital lease	62	0
Supplemental disclosure of cash paid during the period for:
Income taxes	$ 0	$ 12